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Finding the Fourth Proportional to 187,411.80, 258,630.66 and 102,530.28

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Solution

The fourth proportional to 187,411.80, 258,630.66 and 102,530.28 is: 141,493.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,411.80 : 258,630.66 = 102,530.28 : x
  2. Step 2: Convert to fraction form
    187,411.80/258,630.66 = 102,530.28/x
  3. Step 3: Cross multiply
    187,411.80x = 258,630.66 × 102,530.28
  4. Step 4: Simplify right side
    187,411.80x = 26,517,473,986.38
  5. Step 5: Solve for x
    x = 26,517,473,986.38/187,411.80
  6. Step 6: Final answer
    x = 141,493.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.